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Rory McNeil · 10-30-2023, 10:25 AM

I have been running Brad Penn/ Penngrade 1 high ZDDP oils on both my flat tappet, and hydraulic roller stuff, for many years, never had an issue. This oil is advertised as "the flat tappet oil" right on the bottle, and I have never felt the need to try to be a backyard chemist by trying to add any other "magic elixir " to it.

10-30-2023, 10:25 AM	#10
Rory McNeil VIP Member Join Date: Jun 2007 Location: from Vancouver BC Canada, now in Nova Scotia Posts: 1,311 Likes: 317 Liked 1,105 Times in 303 Posts	Re: Flat tappet lifter failure I have been running Brad Penn/ Penngrade 1 high ZDDP oils on both my flat tappet, and hydraulic roller stuff, for many years, never had an issue. This oil is advertised as "the flat tappet oil" right on the bottle, and I have never felt the need to try to be a backyard chemist by trying to add any other "magic elixir " to it. __________________ NHRA 6390 STK M/S 85 Mustang